Titanium vs EAN

[Sadamune]

To answer my own question, I checked Atomic's website and found that, according to this brochure, their T2x regulator first stage is made of 6AL-4V titanium alloy, AKA Grade 5. Interesting choice that...much stronger than CP grades, though not necessarily an advantage in 1st stage regulator bodies I imagine. I wonder why they chose 6AL-4V...I'm going to give 'em a call.

Sadamune

 

[V_kids]

is it really bad? about Titanium regulator with EAN ?
I have been diving with Scuba Pro MK 25 T + S600 T for more than 3 years. Mostly I dove with EAN 32 - 36.
I never have any problem with this combo.
weird...

 

[MSilvia]

You wouldn't likely have any problems with any recreational nitrox mix. It's the deco mixes with fO2>40 that have the most liklihood of being a problem.

Nothing weird about it.

 

[V_kids]

You wouldn't likely have any problems with any recreational nitrox mix. It's the deco mixes with fO2>40 that have the most liklihood of being a problem.

Nothing weird about it.

Ahhhhh..!! thank You for the explanation!
that's a relief for me

 

[deco_martini]

On one hand you have people who understand metallurgy, science, and scientific reports.

On the other hand we have a single anecdote with no clear root cause determination.

Which do I believe.........

 

[Puffer Fish]

I find going with the wild speculation usually is more fun...

 

[diverdoug1]

I don't see any advantage to a titanium regulator. Stainless and brass regs have been used for years and years without corrosion issues. And if your really worried about weight, take the extra pack of jelly beans out of your bag.

As for titanium and O2, I would avoid it. I have seen a titanium fire rip through a CNC machine. The only way to put them out is let the metal burn up, or cut off the oxygen supply. Water does nothing. And that fire started with the part being drenched in coolant, normal atmosphere.

I use 2 MK25T regs for my doubles, they save me quite a bit of weight, because in addition to the lower weight of the regs, also I don't have to add trimm weight at the bottom of my harness. I also freuently dive them with EAN40. I would never suggest not following a manfacturers rec. Having said that, I frequently expose titanium components to hyperoxic conditions at work, and I have chosen to disregard
scubapro's conservative advice on the use of their product.

 

[fppf]

I could not find any weights listed for scuba pro, but Atomic does list there weights and so do some other mfgrs. It looks like Titanium first stages are going for about a pound while brass and stainless regs are looking at 1.75 lbs.

So for 2 regs on a set of doubles your looking at a difference of 1.5 lbs. That's real weight, not accounting for the water they displace. Now compare that to the weight of the doubles near 100 lbs or more, I don't think you will ever notice an effect on trim between titanium and brass. And if your really that sensitive on trim, just take a crap before every dive and you should be ok. If your already doing that just knock the bands up about a quarter inch.

But to each there own, I was more directing that post at people who travel to exotic places. Where the puddle jumper pilot puts everything on a scale to make sure the plane will take off.

 

[diverdoug1]

There is a bit larger difference for the MK25 weights. using the titanium, and being able ot omit the trim weights knock just over 4 lbs off my rig.